diff -ru rebuilt/u0.s build/u0.s
--- rebuilt/u0.s	2008-05-03 08:27:03.000000000 -1000
+++ build/u0.s	2008-05-04 08:29:31.000000000 -1000
@@ -1,6 +1,6 @@
 / u0 -- unix
 
-cold = 0 
+cold = 1 
 orig = 0 . / orig = 0. relocatable
 
 rkda = 177412 / disk address reg            rk03/rk11